Casio fx-82ZA PLUS II user guide

fx-82ZA PLUS II

(NATURAL-V.P.A.M.)

User’s Guide

EN

CASIO Worldwide Education Website

https://edu.casio.com

Manuals are available in multi languages at

https://world.casio.com/manual/calc/

Table of Contents

Before Using the Calculator.................................................... 4

About this Manual.................................................................................... 4

Initializing the Calculator..........................................................................4

Precautions..............................................................................................4

Safety Precautions..........................................................................................4

Handling Precautions......................................................................................5

Getting Started.........................................................................................5

Removing the Hard Case................................................................................5

Turning Power On and Off.............................................................................. 6

Adjusting Display Contrast..............................................................................6

Key Markings.................................................................................................. 6

Reading the Display........................................................................................7

Using Menus...................................................................................................9

Calculation Modes and Calculator Setup.............................10

Calculation Mode................................................................................... 10

Configuring the Calculator Setup...........................................................10

Initializing Calculator Settings....................................................................... 14

Inputting Expressions and Values........................................15

Basic Input Rules...................................................................................15

Inputting with Natural Display................................................................ 16

√

Form Calculation Range.................................................................... 16

Using Values and Expressions as Arguments (Natural Display only)....17

Overwrite Input Mode (Linear Display only)...........................................18

Correcting and Clearing an Expression................................................. 18

Basic Calculations..................................................................19

Toggling Calculation Results..................................................................19

Fraction Calculations............................................................................. 20

Percent Calculations..............................................................................21

Degree, Minute, Second (Sexagesimal) Calculations............................21

Multi-Statements....................................................................................22

Using Engineering Notation................................................................... 22

Remainder Calculations.........................................................................23

Prime Factorization................................................................................24

Calculation History and Replay..............................................................24

Calculation History........................................................................................24

Replay...........................................................................................................25

Using Memory Functions....................................................................... 25

Answer Memory (Ans)/Previous Answer Memory (PreAns)......................... 25

Variables (A, B, C, D, E, F, M, X, Y).............................................................. 27

Independent Memory (M)..............................................................................27

1

Clearing the Contents of All Memories..........................................................28

Function Calculations............................................................29

Pi (π), Natural Logarithm Base e............................................................ 29

Trigonometric Functions........................................................................ 29

Hyperbolic Functions............................................................................. 29

Angle Unit Conversion........................................................................... 30

Exponential Functions............................................................................30

Logarithmic Functions............................................................................30

Power Functions and Power Root Functions.........................................31

Rectangular-Polar Coordinate Conversion............................................ 32

Factorial Function (!)..............................................................................33

Absolute Value Function (Abs)...............................................................33

Random Number (Ran#)........................................................................34

Random Integer (RanInt#)..................................................................... 34

Permutation (nPr) and Combination (nCr)............................................. 34

Rounding Function (Rnd).......................................................................35

Greatest Common Divisor (GCD) and Least Common Multiple (LCM).....

...............................................................................................................35

Using Calculation Modes.......................................................36

Statistical Calculations (STAT)...............................................................36

Inputting Data................................................................................................37

Statistics Calculation Screen.........................................................................38

Using the Statistics Menu..............................................................................38

Calculating Estimated Values........................................................................43

Creating a Numerical Table from Two Functions (TABLE).....................44

Base-n Calculations (BASE-N).............................................................. 46

Specifying the Number Mode of a Particular Input Value..............................47

Converting a Calculation Result to another Type of Value............................48

Logical and Negation Operations..................................................................48

Ratio Calculations..................................................................................50

Changing the Ratio Expression Type............................................................51

RATIO Mode Calculation Example................................................................51

Technical Information............................................................ 52

Errors..................................................................................................... 52

Displaying the Location of an Error...............................................................52

Clearing the Error Message.......................................................................... 52

Error Messages.............................................................................................52

Before Assuming Malfunction of the Calculator... ...............................54

Replacing the Battery.............................................................................54

Calculation Priority Sequence................................................................55

Calculation Ranges, Number of Digits, and Precision........................... 56

Calculation Range and Precision..................................................................56

Function Calculation Input Ranges and Precision........................................ 57

2

Specifications.........................................................................................59

Verifying the Authenticity of Your Calculator.......................................... 59

Frequently Asked Questions.................................................61

Frequently Asked Questions..................................................................61

3

Before Using the Calculator

About this Manual

• In no event shall CASIO Computer Co., Ltd. be liable to anyone for
special, collateral, incidental, or consequential damages in connection
with or arising out of the purchase or use of this product and items that
come with it.

• Moreover, CASIO Computer Co., Ltd. shall not be liable for any claim of
any kind whatsoever by any other party arising out of the use of this
product and the items that come with it.

• Unless specifically stated, all sample operations in this manual assume
that the calculator is in its initial default setup. Use the procedure under
"Initializing the Calculator" to return the calculator to its initial default
setup.

• The contents of this manual are subject to change without notice.

• The displays and illustrations (such as key markings) shown in this
manual are for illustrative purposes only, and may differ somewhat from
the actual items they represent.

• QR Code is a registered trademark of DENSO WAVE INCORPORATED
in Japan and in other countries.

• Company and product names used in this manual may be registered
trademarks or trademarks of their respective owners.

Initializing the Calculator

Perform the following procedure when you want to initialize the calculator
and return the calculation mode and setup to their initial default settings.
Note that this operation also clears all data currently in calculator memory.

(CLR) (All) (Yes)

Precautions

Be sure to read the following safety precautions before using the
calculator.

Safety Precautions

Battery

• Keep batteries out of the reach of small children.

4

• Use only the type of battery specified for this calculator in this
manual.

Handling Precautions

• Even if the calculator is operating normally, replace the battery
according to the schedule shown below. Continued use after the
specified number of years may result in abnormal operation. Replace
the battery immediately after display figures become dim.

fx-82ZA PLUS II: Every two years

• A dead battery can leak, causing damage to and malfunction of the
calculator. Never leave a dead battery in the calculator.

• The battery that comes with the calculator is for factory testing,

and it discharges slightly during shipment and storage. Because of
these reasons, its battery life may be shorter than normal.

• Do not use a nickel-based primary battery with this product.
Incompatibility between such batteries and product specifications can
result in shorter battery life and product malfunction.

• Avoid use and storage of the calculator in areas subjected to
temperature extremes, and large amounts of humidity and dust.

• Do not subject the calculator to excessive impact, pressure, or bending.

• Never try to take the calculator apart.

• Use a soft, dry cloth to clean the exterior of the calculator.

• Whenever discarding the calculator or batteries, be sure to do so in
accordance with the laws and regulations in your particular area.

Getting Started

Removing the Hard Case

Before using the calculator, slide its hard case downwards to remove it,
and then affix the hard case to the back of the calculator as shown in the
illustration below.

5

Turning Power On and Off

• Press

to turn on the calculator.

• Press (OFF) to turn off the calculator.

Note

• The calculator also will turn off automatically after approximately 10 minutes or
approximately 60 minutes of non-use. Press the
on.

key to turn the calculator back

Adjusting Display Contrast

1. Press

2. Use and to adjust display contrast.

3. After the setting is the way you want, press .

(SETUP) ( CONT ).

Important!

• If adjusting display contrast does not improve display readability, it probably means
that battery power is low. Replace the battery.

Key Markings

Pressing the
alternate function of the second key. The alternate function is indicated by
the text printed above the key.

or key followed by a second key performs the

(1) Keycap function (2) Alternate function

• Characters enclosed in brackets (┌ ┐) that are the same color as DEC,
HEX, BIN, and OCT are used in the BASE-N Mode.

• The following shows an example of how an alternate function operation
is represented in this manual.

Example:

(sin-1)* 1

6

* Indicates the function that is accessed by the key operation (

) before it. Note that this is not part of the actual key operation

you perform.

• The following shows an example of how a key operation to select an on­screen menu item is represented in this manual.

Example:
* Indicates the menu item that is selected by the number key

operation (
operation you perform.

• The cursor key is marked with four arrows, indicating direction, as
shown in the illustration nearby. In this manual, cursor key operation is
indicated as

(COMP)*

) before it. Note that this is not part of the actual key

, , , and .

Reading the Display

The two-line display makes it possible to view both the input expression
and its result at the same time.

(1) Input expression
(2) Calculation result
(3) Indicators

• If a
means the displayed calculation result continues to the right. Use
and to scroll the calculation result display.

• If a
means the displayed calculation continues to the right. Use and
to scroll the input expression display. Note that if you want to scroll the
input expression while both the and indicators are displayed, you
will need to press first and then use and to scroll.

indicator appears on the right side of the calculation result, it

indicator appears on the right side of the input expression, it

7

Display indicators

This indicator: Means this:

The keypad has been shifted by pressing the
key. The keypad will unshift and this indicator will
disappear when you press a key.

The alpha input mode has been entered by
pressing the

key. The alpha input mode will
be exited and this indicator will disappear when
you press a key.

M There is a value stored in independent memory.

The calculator is standing by for input of a variable

STO

name to assign a value to the variable. This
indicator appears after you press

(STO).

The calculator is standing by for input of a variable

RCL

name to recall the variable's value. This indicator
appears after you press

.

STAT The calculator is in the STAT Mode.

The default angle unit is degrees.

The default angle unit is radians.

The default angle unit is grads.

FIX A fixed number of decimal places is in effect.

SCI A fixed number of significant digits is in effect.

Math Natural Display is selected as the display format.

Calculation history memory data is available and
can be replayed, or there is more data above/
below the current screen.

The display currently shows an intermediate result

Disp

of a multi-statement calculation.

8

Important!

• For some type of calculation that takes a long time to execute, the display may show
only the above indicators (without any value) while it performs the calculation
internally.

Using Menus

Some of the calculator's operations are performed using menus. Pressing

or , for example, will display a menu of applicable functions.
The following are the operations you should use to navigate between
menus.

• You can select a menu item by pressing the number key that
corresponds to the number to its left on the menu screen.

• The
another menu below the current one. The indicator means another
menu above. Use and to switch between menus.

• To close a menu without selecting anything, press

indicator in the upper right corner of a menu means there is

.

9

Calculation Modes and
Calculator Setup

Calculation Mode

Before starting a calculation, you must first enter the correct mode as
indicated in the table below.

When you want to perform this type of
operation:

General calculations

Statistical and regression calculations

Generation of a numerical table based one or
two functions

Calculations involving specific number
systems (binary, octal, decimal, hexadecimal)

Ratio calculations

Note

• The initial default calculation mode is the COMP Mode.

Perform this key
operation:

(COMP)

(STAT)

(TABLE)

(BASE-N)

(RATIO)

Configuring the Calculator Setup

Pressing
control how the calculations are executed and displayed. The setup menu
has two screens, which you can jump between using and .

Underlined ( ___ ) settings are initial defaults.

(SETUP) displays the setup menu, which you can use to

10

Specifying the Display Format

To specify this
display format:

Natural Display
(MthIO-MathO)

Natural Display
(MthIO-LineO)

Linear Display
(LineIO)

Natural Display (MthIO-MathO, MthIO-LineO) causes fractions, irrational
numbers, and other expressions to be displayed as they are written on
paper.
MthIO-MathO displays input and calculation results using the same format
as they are written on paper.
MthIO-LineO displays input the same way as MthIO-MathO, but
calculation results are displayed in linear format.
Linear Display (LineIO) causes fractions and other expressions to be
displayed in a single line.

Perform this key operation:

(SETUP) (MthIO) (MathO)

(SETUP) (MthIO) (LineO)

(SETUP) (LineIO)

Examples:
MthIO-MathO

MthIO-LineO
(Number Format: Norm 1)

MthIO-LineO
(Number Format: Norm 2)

11

LineIO
(Number Format: Norm 1)

Note

• The calculator switches to Linear Display automatically whenever you enter the STAT
or BASE-N Mode.

Specifying the Default Angle Unit

To specify this as the

Perform this key operation:

default angle unit:

Degrees

Radians

Grads

(SETUP) (Deg)

(SETUP) (Rad)

(SETUP) (Gra)

90°= π/2 radians = 100 grads

Specifying the Number Format

Specifies the number of digits for display of a calculation result.

To specify this: Perform this key operation:

Number of Decimal

(SETUP) (Fix) -

Places

Number of Significant

(SETUP) (Sci) -

Digits

Exponential Display
Range

(SETUP) (Norm) (Norm 1) or

(Norm 2)

Fix: The value you specify (from 0 to 9) controls the number of decimal
places for displayed calculation results. Calculation results are rounded off
to the specified digit before being displayed.
Example: (LineIO) 100 ÷ 7 = 14,286 (Fix 3)

14,29 (Fix 2)

12

Sci: The value you specify (from 0 to 9) controls the number of significant
digits for displayed calculation results. Calculation results are rounded off
to the specified digit before being displayed.
Example: (LineIO) 1 ÷ 7 = 1,4286 × 10-1 (Sci 5)

1,429 × 10-1 (Sci 4)

1,428571429 × 10-1 (Sci 0)
Norm: Selecting one of the two available settings (Norm 1, Norm 2)
determines the range in which results will be displayed in exponential
format. Outside the specified range, results are displayed using non­exponential format.
Norm 1: 10-2 > |x|, |x| ≧ 10
Norm 2: 10-9 > |x|, |x| ≧ 10

10

10

Example: (LineIO) 1 ÷ 200 = 5 × 10-3 (Norm 1)

0,005 (Norm 2)

Specifying the Fraction Display Format

To specify this
fraction display

Perform this key operation:

format:

Mixed

Improper

(SETUP) (ab/c)

(SETUP) (d/c)

Specifying the Stat Format

Specifies whether or not to display a FREQ (frequency) column in the
STAT Mode Statistics Editor.

To specify this: Perform this key operation:

Show FREQ Column

Hide FREQ Column

(SETUP) (STAT) (ON)

(SETUP) (STAT) (OFF)

Specifying the Table Format

Specifies whether to use function f(x) only or the two functions f(x) and g(x)
in the TABLE Mode.

To specify this: Perform this key operation:

f(x) only

(SETUP) (TABLE) (f(x))

13

f(x) and g(x) (SETUP) (TABLE) (f(x),g(x))

Specifying the Auto Power Off Setting

You can specify a trigger time of 10 minutes or 60 minutes for Auto Power
Off.

To specify this: Perform this key operation:

10 Minutes (SETUP) (APO) (10Min.)

60 Minutes

Adjusting Display Contrast

(SETUP) ( CONT )

See "Getting Started" for details.

(SETUP) (APO) (60Min.)

Initializing Calculator Settings

Perform the following procedure to initialize the calculator, which returns
the calculation mode to COMP and returns all other settings, including
setup menu settings, to their initial defaults.

(CLR) (Setup) (Yes)

This setting: Is initialized to this:

Calculation Mode COMP

Display Format MthIO-MathO

Angle Unit Deg

Number Format Norm 2

Fraction Display
Format

Stat Format OFF

Table Format

Auto Power Off 10Min.

d/c

f(x),g(x)

14

Inputting Expressions and
Values

Basic Input Rules

Calculations can be input in the same form as they are written. When you
press
automatically and the result will appear on the display.

Example 1: 4 × sin30 × (30 + 10 × 3) = 120

the priority sequence of the input calculation will be evaluated

*1 Input of the closing parenthesis is required for sin, sinh, and other

functions that include parentheses.

*2 These multiplication symbols (×) can be omitted. A multiplication

symbol can be omitted when it occurs immediately before an opening
parenthesis, immediately before sin or other function that includes
parentheses, immediately before the Ran# (random number) function,
or immediately before a variable (A, B, C, D, E, F, M, X, Y), scientific
constants, π or e.

*3 The closing parenthesis immediately before the

omitted.

Example 2: Input example omitting *2 and *3 operations in the

above example.

30 30 10 3

4

operation can be

Note

• If the calculation becomes longer than the screen width during input, the screen will
scroll automatically to the right and the
this happens, you can scroll back to the left by using

• When Linear Display is selected, pressing
beginning of the calculation, while will jump to the end.

indicator will appear on the display. When

and to move the cursor.

will cause the cursor to jump to the

15

• When Natural Display is selected, pressing while the cursor is at the end of the
input calculation will cause it to jump to the beginning, while pressing
cursor is at the beginning will cause it to jump to the end.

• You can input up to 99 bytes for a calculation. Each numeral, symbol, or function
normally uses one byte. Some functions require three to 13 bytes.

• The cursor will change shape to
remaining. If this happens, end calculation input and then press

when there are 10 bytes or less of allowed input

while the

.

Inputting with Natural Display

Selecting Natural Display makes it possible to input and display fractions
and certain functions (log,
as they are written in your textbook.

, , , , , , , , , Abs) just

Example:

1 + √

(MthIO-MathO)

2

2 2 1 2

Important!

• Certain types of expressions can cause the height of an input expression to be greater
than one display line. The maximum allowable height of an input expression is two
display screens (31 dots × 2). Further input will become impossible if the height of the
calculation you are inputting exceeds the allowable limit.

• Nesting of functions and parentheses is allowed. Further input will become impossible
if you nest too many functions and/or parentheses. If this happens, divide the
calculation into multiple parts and calculate each part separately.

Note

2 + √2

• When you press and obtain a calculation result using Natural Display, part of the
expression you input may be cut off. If you need to view the entire input expression
again, press

√

Form Calculation Range

and then use and to scroll the input expression.

Results that include square root symbols can have up to two terms (an
integer term is also counted as a term).

When a calculation result takes the form ±

a√b

±

c

d√e

f

*

form calculation

, √

results are displayed using formats like those shown below.

16

± a√b, ± d ± a√b,

* The ranges of the coefficients (a, b, c, d, e, f) are as shown below.

1 ≦ a < 100, 1 < b < 1000, 1 ≦ c < 100
0 ≦ d < 100, 0 ≦ e < 1000, 1 ≦ f < 100
(a, b, c, d, e, f are integers)

Example:

10√2 + 15 × 3√3 = 45√3 + 10√2 √ form

99√

999 = 3129,089165 (= 297√111) decimal form

± a'√b ± d'√e

c'

Using Values and Expressions as
Arguments (Natural Display only)

A value or an expression that you have already input can be used as the

7

argument of a function. After you have input

make it the argument of √

Example: To input 1 +

As shown above, the value or expression to the right of the cursor after

(INS) are pressed becomes the argument of the function that is
specified next. The range encompassed as the argument is everything up
to the first open parenthesis to the right, if there is one, or everything up to
the first function to the right (sin(30), log2(4), etc.)
This capability can be used with the following functions:
( ), , ( ), ( ), ( ), , ,
( ), .

, resulting in

7

and then change it to 1 +

6

√

1

, for example, you can

6

7

.

6

7

(MthIO-MathO)

√

6

7 6

(INS)

,

17

Overwrite Input Mode (Linear
Display only)

You can select either insert or overwrite as the input mode, but only while
Linear Display is selected. In the overwrite mode, text you input replaces
the text at the current cursor location. You can toggle between the insert
and overwrite modes by performing the operations:
cursor appears as " " in the insert mode and as " " in the overwrite
mode.

Note

• Natural Display always uses the insert mode, so changing display format from Linear
Display to Natural Display will automatically switch to the insert mode.

(INS). The

Correcting and Clearing an
Expression

To delete a single character or function:

Move the cursor so it is directly to the right of the character or function you
want to delete, and then press
In the overwrite mode, move the cursor so it is directly under the character
or function you want to delete, and then press

To insert a character or function into a calculation:

Use
insert the character or function and then input it. Be sure always to use the
insert mode if Linear Display is selected.

To clear all of the calculation you are inputting:

Press

and to move the cursor to the location where you want to

.

.

.

18

Basic Calculations

Use the
basic calculations.

key to enter the COMP Mode when you want to perform

(COMP)

Toggling Calculation Results

While Natural Display is selected, each press of will toggle the
currently displayed calculation result between its fraction form and decimal
form, its √ form and decimal form, or its π form and decimal form.

1

Example 1: π ÷ 6 =

π = 0,5235987756 (MthIO-MathO)

6

1

(π) 6

Example 2: (√2 + 2) × √3 = √6 + 2√3 = 5,913591358 (MthIO-MathO)

2 2 3

While Linear Display is selected, each press of
currently displayed calculation result between its decimal form and fraction
form.

1

Example 3: 1 ÷ 5 = 0,2 =

4

1

=

Example 4: 1 -

= 0,2 (LineIO)

5

5

(LineIO)

5

1

5

π

6

√6 + 2√3 5,913591358

will toggle the

0,5235987756

0,2 1 5

4 5

1

19

1 5 0,2

Important!

• Depending on the type of calculation result that is on the display when you press the

key, the conversion process may take some time to perform.

• With certain calculation results, pressing the
value.

• You cannot switch from decimal form to mixed fraction form if the total number of digits
used in the mixed fraction (including integer, numerator, denominator, and separator
symbols) is greater than 10.

Note

• With Natural Display (MathO), inputting one of the following calculations and then
pressing
calculation that results in a √
Pressing
result. The √

instead of will display the calculation result in decimal form: a

form or π form expression, a division calculation.

after that will switch to the fraction form or π form of the calculation

form of the result will not appear in this case.

key will not convert the displayed

Fraction Calculations

Note that the input method for fractions is different, depending upon
whether you are using Natural Display or Linear Display.

2

1

Example 1:

+

3

(MthIO-MathO) 2

Example 2: 4 - 3

(MthIO-MathO) 4

7

=

2

6

or

(LineIO) 2

1

1

=

2

2

3 1 2

2 3 1 2

3 1 2 7 6

( ) 3 1 2

7
6

7
6

1
2

(LineIO) 4

Note

• Mixing fractions and decimal values in a calculation while Linear Display is selected
will cause the result to be displayed as a decimal value.

• Results of calculations that mix fraction and decimal values are always decimal.

3 1 2 1 2

20

• Fractions in calculation results are displayed after being reduced to their lowest terms.

To switch a calculation result between improper fraction and mixed
fraction form:

Perform the following key operation:

To switch a calculation result between fraction and decimal form:

Press

.

(a

bcd

)

c

Percent Calculations

Inputting a value and pressing
become a percent.

Example 1: 150 × 20% = 30

150

Example 2: Calculate what percentage of 880 is 660 (75%)

660

Example 3: Increase 2500 by 15% (2875)

2500

Example 4: Decrease 3500 by 25% (2625)

3500

2500 15 (%) 2875

3500 25 (%) 2625

20 (%) 30

880 (%) 75

(%) causes the input value to

Degree, Minute, Second
(Sexagesimal) Calculations

You can perform calculations using sexagesimal values, and convert
values between sexagesimal and decimal.
Performing an addition or subtraction operation between sexagesimal
values, or a multiplication or division operation between a sexagesimal
value and a decimal value will cause the result to be displayed as a
sexagesimal value.
You also can convert between sexagesimal and decimal.
The following is the input format for a sexagesimal value: {degrees}
{minutes} {seconds} .

21

Note

• You must always input something for the degrees and minutes, even if they are zero.

Example 1: 2°20’30” + 39’30” = 3°00’00”

2

20 30 0 39 30 3°0’0”

Example 2: Convert 2°15’18” to its decimal equivalent.

2

15 18 2°15’18”

(Converts sexagesimal to decimal.)

(Converts decimal to sexagesimal.)

2,255

2°15’18”

Multi-Statements

You can use the colon character (:) to connect two or more expressions
and execute them in sequence from left to right when you press

Example: 3 + 3 : 3 × 3

3 (:) 3 3 6

3

.

Using Engineering Notation

A simple key operation transforms a displayed value to engineering
notation.

9

Example 1: Transform the value 1234 to engineering notation, shifting the

decimal point to the right.

1234

Example 2: Transform the value 123 to engineering notation, shifting the

decimal point to the left.

123

(←) 0,123×10

22

1234

1,234×10

1234×10

123

3

0

3

(←) 0,000123×10

Remainder Calculations

You can use the ÷R function to obtain the quotient and remainder in a
division calculation.

Example: To calculate the quotient and remainder of 5 ÷ 2 (quotient = 2,

remainder = 1)

(MthIO-MathO)

5

(LineIO)

5

(÷R) 2

(÷R) 2

6

Note

• Only the quotient value of a ÷R calculation is stored in Ans memory.

• Assigning the result of a remainder division calculation to a variable will assign the
quotient value only. Performing the operation 5
(X) (which assigns the result of 5÷R2 to X) will assign a value of 2 to X.

• If a ÷R calculation is part of a multi-step calculation, only the quotient is passed on to
the next operation.

Example: 10

• Operation of the
the display.

17 (÷R) 6 → 10 2 → 12

and keys is disabled while a remainder division result is on

(÷R) 2 (STO)

Cases when Remainder Division becomes Non-remainder Division

If either of the conditions below exists when you perform a remainder
division operation, the calculation will be treated as normal (non-
remainder) division.

• When either the dividend or the divisor is a very large value
Example: 20000000000 (÷R) 17

→ Calculated as: 20000000000 ÷ 17

• When the quotient is not a positive integer, or if the remainder is not a
positive integer or positive fractional value
Example:

5 (÷R) 2

→ Calculated as: -5 ÷ 2

23

Prime Factorization

In the COMP Mode, a positive integer no more than 10 digits long can be
factored to prime factors.

Example 1: To perform prime factorization on 1014

1014

(FACT)

When you perform prime factorization on a value that includes a factor that
is prime number with more than three digits, the part that cannot be
factored will be enclosed in parentheses on the display.

Example 2: To perform prime factorization on 4104676 (= 22 × 10132)

4104676

(FACT)

Any one of the following operations will exit prime factorization result
display.

- Pressing

- Pressing any of the following keys: or .

- Using the setup menu to change the angle unit setting (Deg, Rad, Gra)

or the display digits setting (Fix, Sci, Norm).

(FACT) or .

1014

4104676

Note

• You will not be able to execute prime factorization while a decimal value, fraction, or
negative value calculation result is displayed. Trying to do so will cause a math error
(Math ERROR).

• You will not be able to execute prime factorization while the result of a calculation that
uses Pol, Rec, ÷R is displayed.

Calculation History and Replay

Calculation History

In the COMP or BASE-N Mode, the calculator remembers up to
approximately 200 bytes of data for the newest calculation.
You can scroll through calculation history contents using and .

24

Example:

1 + 1 = 2

2 + 2 = 4

3 + 3 = 6

(Scrolls back.)

(Scrolls back again.)

Note

• Calculation history data is all cleared whenever you press , when you change to a
different calculation mode, when you change the display format, or whenever you
perform the following operations:
(CLR) (All) (Yes).

1 1 2

2

2 4

3

3 6

(CLR) (Setup) (Yes),

Replay

While a calculation result is on the display, you can press
edit the expression you used for the previous calculation.

or to

4

2

Example: 4 × 3 + 2 = 14

4 × 3 - 7 = 5

4

3 2 14

(Continuing)

7 5

Using Memory Functions

Answer Memory (Ans)/Previous Answer Memory
(PreAns)

The last calculation result obtained is stored in Ans (answer) memory. The
calculation result obtained prior to the last one is stored in PreAns
(previous answer) memory. Displaying the result of a new calculation will
move current Ans memory contents to PreAns memory and store the new
calculation results in Ans memory. PreAns memory can be used only in
the COMP Mode. PreAns memory contents are cleared whenever the
calculator enters another mode from the COMP Mode.

Using Ans Memory to Perform a Series of Calculations

Example: To divide the result of 3 × 4 by 30 (LineIO)

25

3 4 12

(Continuing)

30

Inputting Ans Memory Contents into an Expression

Example: To perform the calculations shown below:

123 456 579

(Continuing) 789

Using PreAns Memory

Example: For T

k+2

= T

+ Tk (Fibonacci sequence), determine the

k+1

sequence from T1 to T5. Note however, that T1 = 1 and T2 = 1.

T1 = 1

1

T2 = 1

1

(Ans = T2 = 1, PreAns = T1 = 1)

T3 = T2 + T1 = 1 + 1

(PreAns)

(Ans = T3 = 2, PreAns = T2 = 1)

(Ans = T1 = 1)

T4 = T3 + T2 = 2 + 1

(Ans = T4 = 3, PreAns = T3 = 2)

26

T5 = T4 + T3 = 3 + 2

Result: The sequence is {1, 1, 2, 3, 5}.

Variables (A, B, C, D, E, F, M, X, Y)

Your calculator has nine preset variables named A, B, C, D, E, F, M, X,
and Y.
You can assign values to variables and use the variables in calculations.

Example:

To assign the result of 3 + 5 to variable A

3

5 (STO) (A) 8

To multiply the contents of variable A by 10

(Continuing) (A) 10 80

To recall the contents of variable A

(Continuing) (A) 8

To clear the contents of variable A

0 (STO) (A) 0

Independent Memory (M)

You can add calculation results to or subtract results from independent
memory.
The "M" indicator appears on the display when there is any value other
than zero stored in independent memory.

Example:

To clear the contents of M

0

To add the result of 10 × 5 to M

(STO) (M) 0

(Continuing) 10 5 50

To subtract the result of 10 + 5 from M

(Continuing) 10

5 (M-) 15

27

To recall the contents of M

(Continuing)

Note

• Variable M is used for independent memory.

(M) 35

Clearing the Contents of All Memories

Ans memory, independent memory, and variable contents are retained
even if you press
calculator.
PreAns memory contents are retained even if you press and turn
off the calculator without exiting the COMP Mode.
Perform the following procedure when you want to clear the contents of all
memories.

(CLR) (Memory) (Yes)

, change the calculation mode, or turn off the

28

Function Calculations

Use the
function calculations.

Note: Using functions can slow down a calculation, which may delay
display of the result. Do not perform any subsequent operation while
waiting for the calculation result to appear. To interrupt an ongoing
calculation before its result appears, press

key to enter the COMP Mode when you want to perform

(COMP)

.

Pi (π), Natural Logarithm Base e

π is displayed as 3,141592654, but π = 3,14159265358980 is used for
internal calculations.

e is displayed as 2,718281828, but e = 2,71828182845904 is used for
internal calculations.

Trigonometric Functions

Specify the angle unit before performing calculations.

Example 1: sin 30° = 0,5 (LineIO) (Angle unit: Deg)

30 0,5

Example 2: sin-1 0,5 = 30° (LineIO) (Angle unit: Deg)

(sin-1) 0 5 30

Hyperbolic Functions

Input a function from the menu that appears when you press
The angle unit setting does not affect calculations.

.

Example 1: sinh 1 = 1,175201194

29

(sinh) 1 1,175201194

Example 2: cosh-1 1 = 0

(cosh-1) 1 0

Angle Unit Conversion

°, r, g : These functions specify the angle unit. ° specifies degrees,
radians, and g grads.
Input a function from the menu that appears when you perform the
following key operation:

Example: π/2 radians = 90°, 50 grads = 45° (Angle unit: Deg)

(π) 2 (DRG ) (r)

50

(DRG ).

(DRG ) (g) 45

r

Exponential Functions

Note that the input method is different depending upon whether you are
using Natural Display or Linear Display.

Example: To calculate e5 × 2 to three significant digits (Sci 3)

(SETUP) (Sci)

90

(MthIO-MathO) ( ) 5 2 2,97×10

(LineIO)

( ) 5 2 2,97×10

Logarithmic Functions

Use the
Base 10 is the default setting if you do not input anything for a.
The
selected. In this case, you must input a value for the base.

Example 1: log10 1000 = log 1000 = 3

Example 2: log2 16 = 4

key to input logab as log (a;b).

key also can be used for input, but only while Natural Display is

1000 3

2

2

30

2 (;) 16 4

(MthIO-MathO, MthIO-LineO)

Example 3: log2(43) = 6 (MthIO-MathO, MthIO-LineO)

Example 4: log2(4)3 = 8 (MthIO-MathO, MthIO-LineO)

2 4 8

Example 5: To calculate ln 90 (= loge 90) to three significant digits (Sci 3)

(SETUP) (Sci)

2 16 4

2 6

90

4,50×10

Power Functions and Power Root
Functions

0

Note that the input methods for
depending upon whether you are using Natural Display or Linear Display.

Example 1: 1,2 × 103 = 1200 (MthIO-MathO)

Example 2: (1 + 1)

Example 3: (52)3 = 15625

Example 4: 5√32 = 2

(MthIO-MathO)

2+2

= 16 (MthIO-MathO)

1 1 2 2 16

, , , and are different

2 10 3 1200

1

5 15625

( ) 5 32 2

(LineIO) 5

Example 5: To calculate √2 × 3 (= 3√2 = 4,242640687...) to three decimal

places (Fix 3)

( ) 32 2

(SETUP) (Fix)

31

(MthIO-MathO) 2 3√2

4,243

(LineIO)

2 3 4,243

Example 6: 3√5 + 3√-27 = -1,290024053

(LineIO)

( ) 5

( ) 27

-1,290024053

1

Example 7:

Note

• The following functions cannot be input in consecutive sequence: x2, x3, , x-1. If you
input 2
press the

= 12

1

1

-

3

4

(LineIO)

, for example, the final will be ignored. To input 2

key, and then press (MthIO-MathO).

3 4 12

2

2

, input 2 ,

Rectangular-Polar Coordinate
Conversion

Pol converts rectangular coordinates to polar coordinates, while Rec
converts polar coordinates to rectangular coordinates.

(1) Rectangular Coordinates (Rec)
(2) Polar Coordinates (Pol)

32

Specify the angle unit before performing calculations.
The calculation result for r and θ and for x and y are each assigned
respectively to variables X and Y.
Calculation result θ is displayed in the range of -180° < θ ≦ 180°.

Example 1: To convert rectangular coordinates (√2; √2) to polar

coordinates (Angle unit: Deg)
(MthIO-MathO)

(Pol) 2 (;) 2

(LineIO)

(Pol) 2 (;) 2

Example 2: To convert polar coordinates (√2; 45°) to rectangular

coordinates (Angle unit: Deg)
(MthIO-MathO)

(Rec) 2 (;) 45 X = 1; Y = 1

r = 2; θ = 45

Factorial Function (!)

Example: (5 + 3)! = 40320

5 3 (x!)

r = 2

θ = 45

40320

Absolute Value Function (Abs)

Note that the input method is different depending upon whether you are
using Natural Display or Linear Display.

Example: |2 - 7| × 2 = 10

(MthIO-MathO)

2 7 2 10

(LineIO)

2 7 2 10

33

Random Number (Ran#)

Generate three 3-digit random numbers.
The random 3-digit decimal values are converted to 3-digit
integer values by multiplying by 1000.

Function that generates a pseudo random number in the range of 0,000 to
0,999.
The result is displayed as a fraction when Natural Display is selected.

Example:

1000 (Ran#) 634

92

175

(Results shown here are for illustrative purposes only. Actual results will
differ.)

Random Integer (RanInt#)

For input of the function of the form RanInt#(a; b), which generates a
random integer within the range of a to b.

Example:

(Results shown here are for illustrative purposes only. Actual results will
differ.)

To generate random integers in the range of 1 to 6

(RanInt) 1 (;) 6 2

Permutation (nPr) and Combination
(nCr)

6

1

Example: To determine the number of permutations and combinations

possible when selecting four people from a group of 10.

Permutations: 10

Combinations: 10

(nPr) 4

(nCr) 4

34

5040

210

Rounding Function (Rnd)

The argument of this function is made a decimal value and then rounded
in accordance with the current number of display digits setting (Norm, Fix,
or Sci).
With Norm 1 or Norm 2, the argument is rounded off to 10 digits.
With Fix and Sci, the argument is rounded off to the specified digit.
When Fix 3 is the display digits setting, for example, the result of 10 ÷ 3 is
displayed as 3,333, while the calculator maintains a value of
3,33333333333333 (15 digits) internally for calculation.
In the case of Rnd(10÷3) = 3,333 (with Fix 3), both the displayed value
and the calculator’s internal value become 3,333.
Because of this a series of calculations will produce different results
depending on whether Rnd is used (Rnd(10÷3) × 3 = 9,999) or not used
(10 ÷ 3 × 3 = 10,000).

Example: To perform the following calculations when Fix 3 is selected for

the number of display digits: 10 ÷ 3 × 3 and Rnd(10 ÷ 3) × 3 (LineIO)

(SETUP) (Fix)

10 3 3 10,000

(Rnd) 10 3 3 9,999

Greatest Common Divisor (GCD) and
Least Common Multiple (LCM)

Greatest Common Divisor (GCD)

GCD determines the greatest common divisor of two values.

Example: To determine the greatest common divisor of 28 and 35

(GCD) 28 (;) 35 7

Least Common Multiple (LCM)

LCM determines the least common multiple of two values.

Example: To determine the least common multiple of 9 and 15

(LCM) 9 (;) 15 45

35

Using Calculation Modes

Statistical Calculations (STAT)

To start a statistical calculation, perform the key operation
to enter the STAT Mode and then use the screen that appears to select the
type of calculation you want to perform.

To select this type of statistical calculation:

(Regression formula shown in parentheses)

Single-variable (X)

Paired-variable (X; Y), linear regression

(y = A + Bx)

Paired-variable (X; Y), quadratic regression

(y = A + Bx + Cx2)

Press this key:

(1-VAR)

(A+BX)

(_+CX2)

(STAT)

Paired-variable (X; Y), logarithmic regression

(y = A + Blnx)

Paired-variable (X; Y), e exponential
regression

(y = A eBx)

Paired-variable (X; Y), ab exponential
regression

(y = ABx)

Paired-variable (X; Y), power regression

(y = AxB)

Paired-variable (X; Y), inverse regression

(y = A + B/x)

Pressing any of the above keys ( to ) displays the Statistics Editor.

(ln X)

(e∧X)

(A•B∧X)

(A•X∧B)

(1/X)

36

Note

• When you want to change the calculation type after entering the STAT Mode, perform
the key operation
screen.

(STAT) (Type) to display the calculation type selection

Inputting Data

Use the Statistics Editor to input data. Perform the following key operation
to display the Statistics Editor:
The number of data rows that can be input depends on the number of
columns: 80 rows for one column, 40 rows for two columns, 26 rows for
three columns.

Note

• Use the FREQ (frequency) column to input the quantity (frequency) of identical data
items. Display of the FREQ column can be turned on (displayed) or off (not displayed)
using the Stat Format setting on the setup menu.

(STAT) (Data).

Example 1: To select linear regression and input the following data:

(170; 66), (173; 68), (179; 75)

(STAT) (A+BX)

170 173 179

66 68 75

Important!

• All data currently input in the Statistics Editor is deleted whenever you exit the STAT
Mode, switch between the single-variable and a paired-variable statistical calculation
type, or change the Stat Format setting on the setup menu.

• The following operations are not supported by the Statistics Editor:
(M-), (STO). Pol, Rec, ÷R, and multi-statements also cannot be input with
the Statistics Editor.

,

37

To change the data in a cell:

Single-variable Statistics

Paired-variables Statistics

In the Statistics Editor, move the cursor to the cell that contains the data
you want to change, input the new data, and then press

To delete a line:

In the Statistics Editor, move the cursor to the line that you want to delete
and then press .

To insert a line:

In the Statistics Editor, move the cursor to the location where you want to
insert the line and then perform the following key operation:

(STAT) (Edit) (Ins).

To delete all Statistics Editor contents:

In the Statistics Editor, perform the following key operation:

(STAT) (Edit) (Del-A).

.

Statistics Calculation Screen

The Statistics Calculation Screen is for performing statistical calculations
with the data you input with the Statistics Editor. Pressing the key
while the Statistics Editor is displayed switches to the Statistics Calculation
Screen.

Using the Statistics Menu

While the Statistics Calculation Screen is on the display, press
(STAT) to display the Statistics Menu.
The content to the Statistics Menu depends on whether the currently
selected statistical operation type uses a single variable or paired
variables.

38

Statistics Menu Items
Common Items

Select this menu

When you want to obtain this:

item:

(Type) Display the calculation type selection screen

(Data) Display the Statistics Editor

Display the Sum sub-menu of commands for

(Sum)

calculating sums

Display the Var sub-menu of commands for

(Var)

calculating the mean, standard deviation, etc.

Display the Reg sub-menu of commands for

regression calculations
Paired-variable:
(Reg)

• For details see "Commands when Linear

Regression Calculation (A+BX) Is Selected"

and "Commands when Quadratic Regression

Calculation (_+CX2) Is Selected".

Single-variable:
(MinMax)
Paired-variable:

Display the MinMax sub-menu of commands

for obtaining maximum and minimum values
(MinMax)

Single-variable (1-VAR) Statistical Calculation Commands
Sum Sub-menu ( (STAT) (Sum))

Select this menu

When you want to obtain this:
item:

(∑x2)

(∑x)

Sum of squares of the sample data

Sum of the sample data

39

Var Sub-menu ( (STAT) (Var))

Select this menu

When you want to obtain this:
item:

(n)

Number of samples

(x) Mean of the sample data

(σx) Population standard deviation

(sx) Sample standard deviation

MinMax Sub-menu (

(STAT) (MinMax))

Select this menu

When you want to obtain this:
item:

(minX) Minimum value

(maxX) Maximum value

(Q1) First quartile

(med) Median

(Q3) Third quartile

Commands when Linear Regression Calculation (A+BX) Is Selected
Sum Sub-menu ( (STAT) (Sum))

Select this menu

When you want to obtain this:
item:

(∑x2)

(∑x)

(∑y2)

Sum of squares of the X-data

Sum of the X-data

Sum of squares of the Y-data

(∑y)

(∑xy)

(∑x3)

Sum of the Y-data

Sum of products of the X-data and Y-data

Sum of cubes of the X-data

40

(∑x2y)

Sum of (X-data squares × Y-data)

(∑x4)

Var Sub-menu (

Sum of biquadrate of the X-data

(STAT) (Var))

Select this menu

When you want to obtain this:
item:

(n)

Number of samples

(x) Mean of the X-data

(σx) Population standard deviation of the X-data

(sx) Sample standard deviation of the X-data

(y) Mean of the Y-data

(σy) Population standard deviation of the Y-data

(sy) Sample standard deviation of the Y-data

Reg Sub-menu (

(STAT) (Reg))

Select this menu

When you want to obtain this:
item:

(A) Regression coefficient constant term A

(B) Regression coefficient B

(r) Correlation coefficient r

(xˆ)

(yˆ)

MinMax Sub-menu (

Estimated value of X

Estimated value of Y

(STAT) (MinMax))

Select this menu

When you want to obtain this:
item:

(minX) Minimum value of the X-data

41

(maxX) Maximum value of the X-data

(minY) Minimum value of the Y-data

(maxY) Maximum value of the Y-data

Commands when Quadratic Regression Calculation (_+CX2) Is
Selected
Reg Sub-menu ( (STAT) (Reg))

Select this menu

When you want to obtain this:
item:

(A) Regression coefficient constant term A

Linear coefficient B of the regression

(B)

coefficients

Quadratic coefficient C of the regression

(C)

coefficients

(xˆ1) Estimated value of x

(xˆ2) Estimated value of x

1

2

(yˆ) Estimated value of y

Note

• xˆ, xˆ1, xˆ2 and yˆ are not variables. They are commands of the type that take an
argument immediately before them. See "Calculating Estimated Values" for more
information.

Example 2: To input the single-variable data x = {1, 2, 2, 3, 3, 3, 4, 4,

5}, using the FREQ column to specify the number of repeats for each
items ({xn; freqn} = {1;1, 2;2, 3;3, 4;2, 5;1}), and calculate the mean and
population standard deviation.

(SETUP) (STAT) (ON)

(STAT) (1-VAR)

1

2 3 4 5

1 2 3 2

(STAT) (Var) (x) 3

42

(STAT) (Var) (σx)

Mean: 3, Population Standard Deviation: 1,154700538

Linear Regression Correlation Coefficient: 0,923
Logarithmic Regression Correlation Coefficient: 0,998
Logarithmic Regression Formula: y = -3857,984 + 2357,532lnx

1,154700538

Results:

Example 3: To calculate the linear regression and logarithmic regression

correlation coefficients for the following paired-variable data and determine
the regression formula for the strongest correlation: (x; y) = (20; 3150),
(110; 7310), (200; 8800), (290; 9310). Specify Fix 3 (three decimal places)
for results.

(SETUP) (STAT) (OFF)

(SETUP) (Fix)

(STAT) (A+BX)

20

110 200 290

3150 7310 8800 9310

(STAT) (Reg) (r)

(STAT) (Type) (ln X)

(STAT) (Reg) (r)

0,923

0,998

(STAT) (Reg) (A) -3857,984

(STAT) (Reg) (B) 2357,532

Results:

Calculating Estimated Values

Based on the regression formula obtained by paired-variable statistical
calculation, the estimated value of y can be calculated for a given x-value.
The corresponding x-value (two values, x1 and x2, in the case of quadratic
regression) also can be calculated for a value of y in the regression
formula.

Example 4: To determine the estimate value for x when y = -130 in the

regression formula produced by logarithmic regression of the data in
Example 3. Specify Fix 3 for the result. (Perform the following operation
after completing the operations in Example 3.)

130 (STAT) (Reg) (xˆ)

Important!

• Regression coefficient, correlation coefficient, and estimated value calculations can
take considerable time when there are a large number of data items.

43

4,861

Creating a Numerical Table from Two
Functions (TABLE)

TABLE generates a numerical table based on one or two functions. You
can use the function f(x) or the two functions f(x) and g(x). See
"Configuring the Calculator Setup" for more information.
Perform the following steps to generate a numerical table.

1. Press

2. Use the X variable to input two functions, one in the format f(x) and the
other in the format g(x).

• Be sure to input the X variable (
numerical table. Any variable other than X is handled as a constant.

• If you are using a single function, input a function in the format f(x)
only.

• The following cannot be used in the function: Pol, Rec.

3. In response to the prompts that appear, input the values you want to
use, pressing

For this prompt: Input this:

(TABLE) to enter the TABLE Mode.

(X)) when generating a

after each one.

Start? Input the lower limit of X (Default = 1).

Input the upper limit of X (Default =

End?

5).
Note: Make sure that the End value is
always greater than the Start value.

44

Input the increment step (Default = 1).
Note: The Step specifies by how
much the Start value should be
sequentially incremented as the

Step?

• Inputting the Step value and pressing
numerical table in accordance with the parameters you specified.

• Pressing while the numerical table screen is displayed will return
to the function input screen in step 2.

Example: To generate a numerical table for the functions f(x) = x2 +

and g(x) = x2 -

0,5 (MthIO-MathO)

1

for the range -1 ≦ x ≦ 1, incremented in steps of

2

numerical table is generated. If you
specify Start = 1 and Step = 1, X
sequentially will be assigned the
values 1, 2, 3, 4, and so on to
generate the numerical table until the
End value is reached.

generates and displays the

1
2

(TABLE)

(SETUP) (TABLE) (f(x),g(x))

(X) 1 2

・Pressing without inputting anything for g(x) will generate a
numerical table based on f(x) only.

(X) 1 2

1 1 0 5

45

Note

• You can use the numerical table screen for viewing values only. Table contents
cannot be edited.

• The numerical table generation operation causes the contents of variable X to be
changed.

• The maximum number of rows in the generated numerical table depends on the
setup menu table setting. Up to 30 rows are supported for the "f(x)" setting, while 20
rows are supported for the "f(x),g(x)" setting.

Important!

• The function you input for numerical table generation is deleted whenever you
display the setup menu in the TABLE Mode and switch between Natural Display
and Linear Display.

Base-n Calculations (BASE-N)

Press

(BASE-N) to enter the BASE-N Mode when you want to
perform calculations using decimal, hexadecimal, binary, and/or octal
values.

The initial default number mode when you enter the BASE-N Mode is
decimal, which means input and calculation results use the decimal
number format.
Press one of the following keys to switch number modes:

(DEC) for
decimal, (HEX) for hexadecimal, (BIN) for binary, or (OCT) for
octal.

Example 1: To enter the BASE-N Mode, switch to the binary mode, and

calculate 112 + 1

2

(BASE-N)

11 1

46

(BIN)

Positive:

Negative:

Positive:

Negative:

Positive:

Negative:

Example 2: Continuing from above, switch to the hexadecimal mode and

0000000000000000 ≦ x ≦ 0111111111111111

1000000000000000 ≦ x ≦ 1111111111111111

00000000000 ≦ x ≦ 17777777777

20000000000 ≦ x ≦ 37777777777

00000000 ≦ x ≦ 7FFFFFFF

80000000 ≦ x ≦ FFFFFFFF

calculate 1F16 + 1

16

(HEX) 1 (F) 1

Example 3: Continuing from above, switch to the octal mode and

calculate 78 + 1

8

(OCT) 7 1

Note

• Use the following keys to input the letters A through F for hexadecimal values:
(A), (B), (C), (D), (E), (F).

• In the BASE-N Mode, input of fractional (decimal) values and exponents is not
supported. If a calculation result has a fractional part, it is cut off.

• The input and output ranges is 16 bits for binary values, and 32 bits for other types of•
values. The following shows details about input and output ranges.

Base-n Mode

Binary

Octal

Decimal

Hexadecimal

Input/Output Ranges

-2147483648 ≦ x ≦ 2147483647

Specifying the Number Mode of a Particular Input
Value

You can input a special command immediately following a value to specify
the number mode of that value. The special commands are: d (decimal), h
(hexadecimal), b (binary), and o (octal).

Example: To calculate 1010 + 1016 + 102 + 108 and display the result as a

decimal value

47

(DEC) (BASE) (d) 10

(BASE) (h) 10
(BASE) (b) 10
(BASE) (o) 10 36

Converting a Calculation Result to another Type of
Value

You can use any one of the following key operations to convert the
currently displayed calculation result to another type of value:
(decimal), (HEX) (hexadecimal), (BIN) (binary), (OCT) (octal).

Example: To calculate 1510 × 3710 in the decimal mode, and then convert

the result to hexadecimal, binary, and octal

(DEC) 15 37 555

(HEX) 0000022B

(DEC)

(BIN) 0000001000101011

(OCT) 00000001053

Logical and Negation Operations

Your calculator provides you with logical operators (and, or, xor, xnor) and
functions (Not, Neg) for logical and negation operations on binary values.
Use the menu that appears when you press
logical operators and functions.

Press this key: When you want to input this:

Logical operator "and" (logical product),

(and)

which returns the result of a bitwise AND

Logical operator "or" (logical sum), which

(or)

returns the result of a bitwise OR

(BASE) to input these

(xor)

Logical operator "xor" (exclusive logical
sum), which returns the result of a bitwise
XOR

48

Logical operator "xnor" (exclusive

(xnor)

negative logical sum), which returns the
result of a bitwise XNOR

"Not(" function, which returns the result of

(Not)

a bitwise complement

"Neg(" function, which returns the result of

(Neg)

a two's complement

All of the following examples are performed in the binary mode (

(BIN)).

Example 1: To determine the logical AND of 10102 and 11002 (10102 and

11002)

1010 (BASE) (and) 1100 0000000000001000

Example 2: To determine the logical OR of 10112 and 110102 (10112 or

110102)

1011 (BASE) (or) 11010 0000000000011011

Example 3: To determine the logical XOR of 10102 and 11002 (10102 xor

11002)

1010 (BASE) (xor) 1100 0000000000000110

Example 4: To determine the logical XNOR of 11112 and 1012 (11112 xnor

1012)

1111 (BASE) (xnor) 101 1111111111110101

Example 5: To determine the bitwise complement of 10102 (Not(10102))

(BASE) (Not) 1010 1111111111110101

Example 6: To negate (take the two's complement) of 1011012

(Neg(1011012))

(BASE) (Neg) 101101 1111111111010011

Note

• In the case of a negative binary, octal or hexadecimal value, the calculator converts
the value to binary, takes the two's complement, and then converts back to the original
number base. For decimal (base-10) values, the calculator merely adds a minus sign.

49

Ratio Calculations

The RATIO Mode lets you determine the value of X in the ratio expression
a : b = X : d (or a : b = c : X) when the values of a, b, c and d are known.
The following shows the general procedure for using RATIO.

1. Press (RATIO) to enter the RATIO Mode.

2. On the menu that appears, select (a:b=X:d) or (a:b=c:X).

3. On the Coefficient Editor screen that appears, input up to 10 digits for
each of the required values (a, b, c, d).

• To solve 3 : 8 = X : 12 for X, for example, press
then input the following for the coefficients (a = 3, b = 8, d = 12): 3 8

12 .

in step 1, and

• To change a coefficient value you already have input, move the cursor
to the appropriate cell, input the new value, and then press .

• Pressing will clear all of the coefficients to zero.

Note: The following operations are not supported by the Coefficient
Editor: , (M-), (STO). Pol, Rec, ÷R, and multi-
statements also cannot be input with the Coefficient Editor.

4. After all the values are the way you want, press

• This displays the solution (value of X).

• Pressing again will return to the Coefficient Editor.

Important!

• A Math ERROR will occur if you perform a calculation while 0 is input for a coefficient.

.

50

Changing the Ratio Expression Type

Re-enter the RATIO Mode and select the ratio expression type you want
from the menu that appears. Changing the ratio expression type causes
the values of all Coefficient Editor coefficients to change to zero.

RATIO Mode Calculation Example

Example 1: To calculate X in the ratio 1 : 2 = X : 10

(RATIO) (a:b=X:d)

1

2 10

Example 2: To calculate X in the ratio 1 : 2 = 10 : X

(RATIO) (a:b=c:X)

1

2 10

51

Technical Information

Errors

The calculator will display an error message whenever an error occurs for
any reason during a calculation.
There are two ways to exit an error message display: Pressing
to display the location of the error, or pressing to clear the message
and calculation.

Displaying the Location of an Error

or

While an error message is displayed, press
calculation screen. The cursor will be positioned at the location where the
error occurred, ready for input. Make the necessary corrections to the
calculation and execute it again.

Example: When you input 14 ÷ 0 × 2 by mistake instead of 14 ÷ 10 ×

2 (MthIO-MathO)

14

0 2

or to return to the

(or )

1

Clearing the Error Message

While an error message is displayed, press
screen. Note that this also clears the calculation that contained the error.

to return to the calculation

Error Messages

Math ERROR

Cause:

• The intermediate or final result of the calculation you are performing
exceeds the allowable calculation range.

52

• Your input exceeds the allowable input range (particularly when using
functions).

• The calculation you are performing contains an illegal mathematical
operation (such as division by zero).

Action:

• Check the input values, reduce the number of digits, and try again.

• When using independent memory or a variable as the argument of a
function, make sure that the memory or variable value is within the
allowable range for the function.

Stack ERROR

Cause:

• The calculation you are performing has caused the capacity of the
numeric stack or the command stack to be exceeded.

Action:

• Simplify the calculation expression so it does not exceed the capacity
of the stack.

• Try splitting the calculation into two or more parts.

Syntax ERROR

Cause:

• There is a problem with the format of the calculation you are
performing.

Action:

• Make necessary corrections.

Insufficient MEM Error

Cause:

• An attempt to generate a numerical table in the TABLE Mode whose
conditions cause it to exceed the maximum number of allowable rows.
The maximum number of rows is 30 when "f(x)" is selected for the
setup menu table setting and 20 when "f(x),g(x)" is selected.

Action:

• Narrow the table calculation range by changing the Start, End, and
Step values, and try again.

Argument ERROR

Cause:

• A non-integer argument was input for the random number function
(RanInt#).

53

Action:

• Input only integers for the argument.

Before Assuming Malfunction of the
Calculator...

Perform the following steps whenever an error occurs during a calculation
or when calculation results are not what you expected. If one step does
not correct the problem, move on to the next step.
Note that you should make separate copies of important data before
performing these steps.

1. Check the calculation expression to make sure that it does not contain
any errors.

2. Make sure that you are using the correct mode for the type of
calculation you are trying to perform.

3. If the above steps do not correct your problem, press the
will cause the calculator to perform a routine that checks whether
calculation functions are operating correctly. If the calculator discovers
any abnormality, it automatically initializes the calculation mode and
clears memory contents. For details about initialized settings, see
"Configuring the Calculator Setup".

4. Initialize all modes and settings by performing the following
operation:

(CLR) (Setup) (Yes).

key. This

Replacing the Battery

The battery needs to be replaced after a specific number of years. Also,
replace the battery immediately after display figures become dim.
A low battery is indicated by a dim display, even if contrast is adjusted, or
by failure of figures to appear on the display immediately after you turn on
the calculator. If this happens, replace the battery with a new one.

Important!

• Removing the battery will cause all of the calculator’s memory contents to be deleted.

1. Press

2. On the back of the calculator, remove the screws and the cover.

(OFF) to turn off the calculator.

54

3. Remove the battery, and then load a new battery with its plus (+) and
minus (-) ends facing correctly.

4. Replace the cover.

5. Initialize the calculator: (CLR) (All) (Yes).

• Do not skip the above step!

Calculation Priority Sequence

The priority sequence of input calculations is evaluated in accordance with
the rules below.
When the priority of two expressions is the same, the calculation is
performed from left to right.

1 Parenthetical expressions

2

3

4 Fractions

5

6

Functions that require an argument to the right and a closing
parenthesis ")" following the argument

Functions that come after the input value (x2, x3, x-1, x!, °’ ”, °,

r

, g, %), powers (

Negative sign ((-)), base-n symbols (d, h, b, o)

STAT Mode estimated values (xˆ, yˆ, xˆ1, xˆ2)

), roots ( )

55

7 Multiplication where the multiplication sign is omitted

8

9 Multiplication (×), division (÷), remainder calculations (÷R)

10 Addition (+), subtraction (-)

11 and (logical operator)

12 or, xor, xnor (logical operators)

Note

• When squaring a negative value (such as -2), the value being squared must be
enclosed in parentheses (
the negative sign, inputting
appending a negative sign to the result.

• Always keep the priority sequence in mind, and enclose negative values in
parentheses when required.

Permutation (nPr), combination (nCr)

2 ). Since x2 has a higher priority than

2 would result in the squaring of 2 and then

Calculation Ranges, Number of
Digits, and Precision

The calculation range, number of digits used for internal calculation, and
calculation precision depends on the type of calculation you are
performing.

Calculation Range and Precision

Calculation Range ±1 × 10

Number of Digits for
Internal Calculation

Precision

15 digits

In general, ±1 at the 10th digit for a single
calculation. Precision for exponential display is
±1 at the least significant digit. Errors are

-99

to ±9,999999999 × 1099 or 0

cumulative in the case of consecutive
calculations.

56

Function Calculation Input Ranges and Precision

Functions Input Range

Deg

0 ≦ |x| < 9 × 10

9

sinx

Rad

0 ≦ |x| < 157079632,7

cosx

Gra

0 ≦ |x| < 1 × 10

10

Same as sinx, except when |x| = (2n-1) ×

Deg

90.

Same as sinx, except when |x| = (2n-1) ×

tanx

Rad

π/2.

Same as sinx, except when |x| = (2n-1) ×

Gra

100.

sin-1x, cos-1x 0 ≦ |x| ≦ 1

tan-1x 0 ≦ |x| ≦ 9,999999999 × 10

99

sinhx, coshx 0 ≦ |x| ≦ 230,2585092

sinh-1x 0 ≦ |x| ≦ 4,999999999 × 10

cosh-1x 1 ≦ x ≦ 4,999999999 × 10

tanhx 0 ≦ |x| ≦ 9,999999999 × 10

tanh-1x 0 ≦ |x| ≦ 9,999999999 × 10

logx, lnx 0 < x ≦ 9,999999999 × 10

x

10

x

e

x 0 ≦ x < 1 × 10

√

2

x

-9,999999999 × 1099 ≦ x ≦ 99,99999999

-9,999999999 × 1099 ≦ x ≦ 230,2585092

100

|x| < 1 × 10

50

99

99

99

99

-1

-1

x

3

√

x |x| < 1 × 10

|x| < 1 × 10

100

100

57

; x ≠ 0

x! 0 ≦ x ≦ 69 (x is an integer)

nPr

nCr

Pol(x; y)

Rec(r; θ)

°’ ”

←

°’ ”

0 ≦ n < 1 × 1010, 0 ≦ r ≦ n (n, r are integers)
1 ≦ {n!/(n-r)!} < 1 × 10

100

0 ≦ n < 1 × 1010, 0 ≦ r ≦ n (n, r are integers)
1 ≦ n!/r! < 1 × 10

100

or 1 ≦ n!/(n-r)! < 1 × 10

|x|, |y| ≦ 9,999999999 × 10
√

x2 + y2 ≦ 9,999999999 × 10

0 ≦ r ≦ 9,999999999 × 10

99

99

99

100

θ: Same as sinx

a°b’c”: |a|, b, c < 1 × 10

100

; 0 ≦ b, c
The display seconds value is subject to an error
of ±1 at the second decimal place.

|x| < 1 × 10

100

Decimal ↔ Sexagesimal Conversions
0°0’0” ≦ |x| ≦ 9999999°59’59”

x > 0: -1 × 10

100

< ylogx < 100

x = 0: y > 0

y

x

x < 0: y = n,

m

(m, n are integers)

2n + 1

However: -1 × 10

y > 0: x ≠ 0, -1 × 10

x

y

√

y = 0: x > 0

y < 0: x = 2n+1,

100

< ylog |x| < 100

100

< 1/x logy < 100

2n + 1

(m ≠ 0; m, n are integers)

　 m　

However: -1 × 10

100

< 1/x log |y| < 100

Total of integer, numerator, and denominator

a b/

c

must be 10 digits or less (including separator
symbol).

RanInt#(a; b) a < b; |a|, |b| < 1 × 1010; b - a < 1 × 10

10

GCD(a; b) |a|, |b| < 1 × 1010 (a, b are integers)

LCM(a; b) 0 ≦ a, b < 1 × 1010 (a, b are integers)

58

• Precision is basically the same as that described under "Calculation
Range and Precision", above.

y, 3√ , x!, nPr, nCr type functions require consecutive internal

• xy, x√
calculation, which can cause accumulation of errors that occur with each
calculation.

• Error is cumulative and tends to be large in the vicinity of a function's
singular point and inflection point.

• The range for calculation results that can be displayed in π form when
using Natural Display is |x| < 106. Note, however, that internal calculation
error can make it impossible to display some calculation results in π
form. It also can cause calculation results that should be in decimal form
to appear in π form.

Specifications

Power Requirements:

AAA-size battery R03 (UM-4) × 1

Approximate Battery Life:

2 years (based on one hour of operation per day)

Operating Temperature:

0°C to 40°C (32°F to 104°F)

Dimensions:

13,8 (H) × 77 (W) × 161,5 (D) mm
1

/2" (H) × 3" (W) × 63/8" (D)

Approximate Weight:

105 g (3,7 oz) including the battery

Verifying the Authenticity of Your
Calculator

Use the steps below to verify that your calculator is a genuine CASIO
calculator.

1. Press

2. Press .

• This displays the information below.

- Calculator ID number (24-character string)

.

59

- QR Code for accessing the Worldwide Education Service
(https://wes.casio.com/calc/)

3. Access the above site.

4. Follow the instructions on the display to verify the authenticity of your
calculator.

Press

to return to the mode menu.

60

Frequently Asked Questions

Frequently Asked Questions

■ How can I perform input and display results the same way I did on
a model that does not have Natural Textbook Format?

→ Perform the following key operation:

"Configuring the Calculator Setup" for more information.

■ How can I change a fraction form result to decimal form?
How can I change a fraction form result produced by a division
operation to decimal form?

→ See "Toggling Calculation Results" for the procedure.

■ What is the difference between Ans memory, PreAns memory,
independent memory, and variable memory?

→ Each of these types of memory acts like "containers" for temporary

storage of a single value.

Ans Memory:

Stores the result of the last calculation performed. Use this memory to
carry the result of one calculation on to the next.

PreAns Memory:

Stores the result of calculation before the last one. PreAns memory can
be used only in the COMP Mode.

Independent Memory:

Use this memory to totalize the results of multiple calculations.

Variables:

This memory is helpful when you need to uses the same value multiple
times in one or more calculations.

(SETUP) (LineIO). See

■ What is the key operation to take me from the STAT Mode or TABLE
Mode to a mode where I can perform arithmetic calculations?

→ Press

■ How can I return the calculator to its initial default settings?

→ Perform the following key operation:

■ When I execute a function calculation, why do I get a calculation
result that is completely different from older CASIO calculator
models?

→ With a Natural Textbook Display model, the argument of a function that

uses parentheses must be followed by a closing parenthesis. Failing to

(COMP).

(CLR) (Setup) (Yes).

61

0,707106781230 15

press after the argument to close the parentheses may cause

Example: (sin 30) + 15 (Angle Unit: Deg)

Natural Textbook Display Model:

Failure to press here as shown below will result in calculation of sin

45.

unwanted values or expressions to be included as part of the argument.

Older (S-V.P.A.M.) Model: 30 15 15,5

(LineIO) 30 15 15,5

62

© 2020 CASIO COMPUTER CO., LTD.